Automobile bumper



Aug. 17,1926. 1,596,491

. H s. JANDUS AUTOMOBILE BUMPER Filed Nov. 12, 1923 /i r W Patented Au 17, 192

"U 'IE 'TKTEs PATENT OFFICE] HEBBEBT S. JAN'DF'S, OF DETROIT, MIClHIGAN, A SSIGNOR TO THE C. G. SPR ING 8c BUMPER COMPANY, OF DETROIT, MICHlIG-AIN, A. CORPORATION OF DELAWARE.

AUTOMOBILE BUMPER.

Application filed November 12, 1923. Serial No. 674,185.

This invention relates to bumpers for automobiles and similar vehicles, and has for its general object to provide a construction of such bumpers and a manner of supportingthe same which will relieve the lateral stress imposed upon the supports when a severe blow is received'by the bumper intermediate of. such supports. A further object of the invention is to '10 provide a bum er, having the characteristics referred'to, w 'ch is also capable of standthe ordinary ini ing, with marked efficiency,

cidents of use.

In the drawin forming part hereof, Fig. 151 represents a p an view of a bumper embodying my invention, together with the supporting arms therefor; Fig. 2, a front elevation of such bumper; and Fig. 3, aplan view of a modification of the bumper I shown in the preceding views.

In both forms of my invention shown herein, the bumper is provided with. a rear bar to which the supporting arms are connected, and the rear bar is so formed as to' provide, between the supporting arms, an

amount of metal additional to that required for supporting and bracing or trussing purposes, which surplus stock will yield under impact and thus relieve the supporting arms of a considerable amount of lateral strain that would otherwise be imposed thereu on by theblows imparted to the front or 1mpact portion of the bumper intermediate of such arms.

In the drawings, my invention is shown as applied to a bum er of the character shown in -McGrrego'r atent No. 1,372,154,

, issued March 22, 1921, said bumper comprising a "pair of vertically spaced, parallel 40 front or impact bars'l, each having an eye ateach end thereof, and a rear bar 2 having.

an .eye at each end thereof, as. indicated at 2,- the eyes on the ends of the last-mentioned bar being interposed between and aligned with-the eyes on the ends of the vertically .spaced bars 1 and being. connected thereto by the bolts 3.

As is the case with the bumper shown in the McGregor patent referredto, the'cens tral portion .2 of the bar '2' is: projected oward and between the central portions of the bars 1 and, isconnected thereto by a pair of clamping plates 4, 5, connected by boltsorrivets 6. 5 The bumper is supported from the side members of the vehicle (not shown) by means ofa pair of arms 7 and clamps 8 pivptally mounted on the ends of said arms and connected to the rear bar 2 between the central portion of the bar and such ends there- Where the portion df the rear bar between the arms 7 and, clam s 8 is connected to the central-polgtions of t e bars 1 without any surplus metal' being livered to the bars 1, ing arms'7, will deflect of such bars .rearwardly provided, a blow deetween the supportthe central portion, and, as soon as the centrally deflected portion of the rear bar is moved rearwardly a comparatively short distance, a lateral strain will be brought upon the arms -7 whichwill tend to bend them and also to spring the side members of the vehicle toward each other.

In order to minimize, and in many instances to eliminate, the injurious results following the action described, I have provided a surplus amount of metal in the portion of the bar 2 intermediate the arms 7, thereby eflecti vely and materially" increasing the length of the bar between these parts. This result may be accomplished in the manner shown in Fig. 1, wherein the rear bar is first bent rearwardly, adjacentto its support and intermediate of the ,two supports 7,, and the central portion 2 is then projected inwardly from such rearwardl directed bends 2.

'trally deflected portion 2", instead 'ofwith a single bend or corrugatiomas is'the case in Figs. .1 and- 2.- In .Fig. 3, the bends or corrugations intermediate "the central portion and of the supports 7 are indicated at 2 and 2.

- As the other parts of the bumper are-1 0 identical with those'shown Figs. 1 and 2, they are identified by the same numerals. as are employed upon such-earlier views.

'W'hile I have shown my invention as embodied in a bumper having a plurality of. 1 front or impact bars, it will be evident that it is capable of being used with other 1 types of bumpers, the partlcular form shown herein being the present preferred form in which I contemplate using my invention. In

' auxiliary bar on each side of such central connection and between the said connection and the cooperating arm being bent or de-' Having thus described my invention, what I claim is 1 p 1. The combination, with a pair of bumper supporting arms, of a bumper comprising a rear or auxiliary bar connected to said arms and a front or impact bar connected at its ends to the ends of the rear or auxiliary bar, the central part of the portion of the rear 0r auxiliary bar which is intermediate of such supporting arms being projected tOT ward and connected to the central part of the impact bar and the part of the rear or flected at substantially right angles to the length of the bumper whereby a surplus length of material in suchrear or auxiliary bar is provided between the supporting arms and the central portion of the bumper is capable of moving rearwardly for a material distance without lateral bending of the said arms. 1 r

2. The combination, with a pair of bumper supporting arms, of a bumper comprising a rear or auxiliary bar connected to said arms and a front or impact bar connected at its ends to the ends of the rear or auxiliary bar, the central part of the portion of the rear or auxiliary bar which is intermediate of such supporting arms being projected toward seaaer and connected to the central part of the impact bar and the part of the rear or auxiliary bar on each side of such central connection and between the said connection and the to operating arm being provided with alternatforwardly and rearwardly pro ect1n ing bends whereby a surplus length of material in such rear or auxiliary bar is provided bebeing projected toward and secured to the central portion of the front bar or bars, the portions of the rear bar between such centrally connected portion and the supporting arms being formed into one or more bends extending at substantially right angles to the length of the bumper thereby to increase the effective length of the deflected portions of the rear' bar include'd between the said arms and whereby the central portion of the bumper is capableof moving rearwardly for a material distance'without lateral bending of the said arms.

In testimony whereof, I hereunto aifix my signature.

HERBERT S. JAND US. 

